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IBM UDB V8.1 for z/OS

The DB2 typical Database (UDB) is a pass-platform database device developed with the aid of IBM. This chapter introduces the newest version of this software, and enumerates the facets that build UDB a sensible option for your enterprise.

This chapter is from the booklet 

DATABASE 2 (DB2) frequent Database (UDB) for Linux, UNIX, and home windows is a relational database management system (RDBMS) developed with the aid of IBM. edition eight.2, available on account that September 2004, is the most present version of the product, and the one mentioned in this e-book.

during this chapter you will study:

The background of DB2

The DB2 portfolio of tips management products

How DB2 is developed

DB2 server editions and customers

How DB2 is packaged for developers

Syntax diagram conventions

considering the Seventies, when IBM research invented the Relational model and the Structured question Language (SQL), IBM has developed an entire household of RDBMS utility. development began on mainframe systems comparable to digital machine (VM), digital Storage extended (VSE), and assorted virtual Storage (MVS). In 1983, DB2 for MVS version 1 become born. "DB2" become used to testify a shift from hierarchical databases&8212;just like the information management tackle (IMS) accepted on the time&8212;to the current relational databases. DB2 construction persevered on mainframe structures in addition to on allotted platforms. [1]determine 1.1 shows one of the most highlights of DB2 background.

In 1996, IBM introduced DB2 UDB version 5 for disbursed systems. With this edition, DB2 was able to uphold every bit of kinds of electronic information, together with habitual relational statistics, in addition to audio, video, and textual content documents. It was the first version optimized for the internet, and it supported a purview of dispensed systems&8212;as an instance, OS/2, windows, AIX, HP-UX, and Solaris&8212;from varied companies. in addition, this widespread database turned into capable of race on loads of hardware, from uniprocessor programs and symmetric multiprocessor (SMP) systems to massively parallel processing (MPP) programs and clusters of SMP techniques. IBM blanketed the time term "familiar" in the title to characterize the brand current capabilities of this version. every bit of models of DB2 on distributed platforms and on MVS, AS/400, VM, and VSE gain adopted the title DB2 UDB.

today, DB2 represents a portfolio of counsel administration items. desk 1.1 suggests the DB2 counsel management portfolio and the product offerings beneath every classification. To specially advert to database servers, "UDB" must exist added to the name, as in DB2 UDB . In most books and files, including this one, the terms "DB2" and "DB2 UDB" are used interchangeably. except in any other case mentioned, after they utilize anyone of those phrases during this publication, we're regarding DB2 operating on Linux, UNIX, or home windows.

desk 1.1. DB2 tips administration items

tips administration products

Description

Product offerings

Database Servers

save digital information and permit the sharing of assistance across diverse structures.

IBM DB2 UDB

IBM Informix

IBM IMS

IBM purple Brick Warehouse

IBM U2

IBM Cloudscape

DB2 industry Intelligence

support consumers assemble, prepare, control, analyze, and extract useful recommendation from every bit of statistics forms to assist them build more insightful enterprise choices faster.

The biggest trend in IT careers is certification. You survey it every bit of over you appear to be... certification books dominate the bookstores, school room working towards now ensures a "move," and IT gurus even symptom their emails with a list of their "certs."

Certification has arrived, no question. but as a DB2® skilled, when you certify? Will it boost your capabilities or aid your profession? How are you able to execute it instantly and inexpensively? That final concept is key -- understanding the interior fable on DB2 certification earlier than you proceed will preclude a ton of time, stress and cash. this text tells you what you necessity to recognize to settle if DB2 certification is for you, and if so, the secrets to doing it effectively, without retard and inexpensively.

Is certification "value it"?

First, bethink that a complete trade gains from certification. Trainers promote certification-oriented courseware, consultants push working towards, publishers market books, and companies sell every bit of the above. The upshot is that you cannot assume most articles on certification at countenance value. Let's assume a different tack. we'll try to appear on the rigor objectively, strictly from the IT expert's standpoint.

Why certify? Some execute it for the problem of demonstrating their talents, or for the inner satisfaction that comes from mastery of the cloth. whether a "certified DB2 developer" is improved than one which isn't licensed is, to affirm the least, enormously arguable. What they are able to affirm for sure is that if you certify you will emerge as figuring out greater about DB2 than you did in the event you started.

Many certify for profession advantages. in case you view it this manner, you should:

Certify with a product that has principal marketshare (and is on the upswing)

investigate the marketability of the specific cert through which you're fascinated

On the first element, DB2 is the correct choice. Most analysts coincide that IBM has taken the lead in the database market far from Oracle (2).

considering that database marketshare varies by means of platform, which platform you're employed on should component into your resolution. DB2 fully dominates on mainframes and the IBM e-server® iSeriesTM (AS/four hundred), with over ninety% of the database marketshare for every. IBM is available in a robust 2d in UNIX® database marketshare, and a far-off however becoming third on windows® Server. facts for Linux is sketchy, but DB2 appears dominant among the industrial databases (

A DB2 programmer wanted to shift into database administration. Getting her DBA cert bagged her the switch.

A DB2 developer changed into extremely generous with JavaTM but felt too narrow because he didn't know about different strategies to DB2 utility construction. Getting the "developer" cert gave him the breadth he essential.

A dwell-at-domestic mother desired to reenter the team of workers after a 10-yr absence. She received licensed and successfully leveraged this as "proof of alien money" for her advantage.

a current faculty grad desperately wanted to exist a DBA but simplest got programming job offers. He proved his devotion to his goal via certifying as a DB2 DBA, which resulted in an entry-degree DBA position.

A develope database veteran realized he crucial to replace his abilities. Certifying each did this for him and provided the proof. Age discrimination? His certification is as existing as anyone else's.

As a contractor, I've at once benefited from certification. It gives me rapid credibility with potential employers who've by no means met me and serves as my trump card for contractor interviews. It deals me an Ace in nowadays?s extremely aggressive job market.

Employers desperately want some ordinary size to at once divorce qualified from unqualified candidates. honest or now not, they've adopted IT certifications as that yardstick. there's cramped question that DB2 certification can uphold your career, but sooner or later each grownup gain to settle for him or herself whether or not it's value the time and energy.

the artery to certify

You certify by artery of passing one or extra assessments. The Roadmap to DB2 edition eight certification in determine 2 suggests that you certify as a DB2 Database affiliate by passing the required entry sight at various, "DB2 household Fundamentals, seven hundred." Then assume any of the five additional certification tests, reckoning on your enviornment of pastime. as an instance, to become a certified DB2 Database Administrator, pass "DB2 DBA for Linux, UNIX and home windows, 701," or certify as a mainframe DBA via passing "DB2 DBA for z/OS, 702." (note- examination #702 might exist obtainable in 1st quarter 2004). You could too become a certified application Developer by means of passing "DB2 family unit functions development, 703." Or certify in industry Intelligence via taking "DB2 industry Intelligence, 705," or concentrate on the content manager by artery of examination #442.

a really character function of the DB2 certification application is its modularity. After passing the ?DB2 household FundamentalsÂ _ entry verify #seven-hundred, assume whichever examination(s) you like. each one you flux gives you an additional certification.

IBM delivered a few current facets within the version eight certification software. First, there's a tripartite course yielding three ascending stages of DBA certification. This transparent course replaces the seize-bag of advanced ?certified solution knowledgeableÂ _ (CSE) tests in version 7:

The version 8 program additionally introduces a sole check by which edition 7-licensed DBAs can upgrade their certification. this is called ?DB2 for Linux, Unix and windows version eight upgrade examination, 706.Â _ if you're a version 7 licensed DBA, that you can both assume this current improve examine, or with no worry circulate the common database administration exam #701 to improve your DBA cert to version eight. The improve check points fewer questions and is a shorter sight at various, but many extra study materials are available to assist you circulate the yardstick DBA verify, #701. In edition 8, IBM added a brand current check referred to as the ?DB2 problem option Mastery examinationÂ _. The examination covers issue determination the utilize of DB2 tools, for installing, configuration, communications and so on. Technically, it is not a certification examination, so it has no formal pre-requisites, nor execute you obtain an authentic certification with the aid of passing it. This check might exist of extraordinary activity to folks that certify as a DBA and necessity to give a boost to (and prove) their issue identification and resolution capabilities. The check charges handiest $forty and can exist taken on-line by means of the web. For full tips on this examination, and a free, downloadable set of nine sight at tutorials, dispute with the exam net page at table 2. examination guidance

before beginning the certification method, read the IBM " and="" current="" phrases="" href="http://www-1.ibm.com/certify/index.shtml" rationalization=""> for his or her program to ensure you tolerate in intelligence and regard comfy with it earlier than committing.

What are the exams like?

diverse candidates gain several experiences. having said that, there exists some conventional information on the subject. compared to different database companies' tests, the questions about the DB2 checks are intricate. however as table 2 suggests, the percentage of questions you should reply as it should exist to trip is reasonably low. sustain at IDUG conferences indicates a flux expense of about 75% for DB2 tests. tolerate in intelligence that each one questions are assorted option, so reply every one (there is no penalty for incorrect solutions, so at the least pot at every query). The examination software means that you can ticket questions to return to later, so you can pass complicated questions and return to them.

The time allowed for the checks is beneficiant. you are going to handiest devour the disbursed time if you investigate your work cautiously. if you happen to're performed with the examination, click the achieved button and the application immediately shows you even if you passed. you can print copies of your rating instant by means of the LAN-connected printer. if you flow, IBM sends you a certificate by means of mail for printing and framing. You may additionally request one by using mail.

What in case you execute not finish the test in the allotted time? The screen freezes, a message tells you the exam has ended, and you'll survey the equal circulate or fail message you would in case you had clicked the finished button yourself. Oops!

You gain to resolve for the tests. Being a DB2 guru may not assist if you don't sight at! The tests are broader than most IT execs' handicap base and additionally very selected in what they ask. they're designed to exist rigorous.

in comparison to competing database carriers' tests, the IBM DB2 checks appear to gain fewer overly inevitable trivial pursuit questions and greater questions requiring profound notion. The tests are hypothetical to check your DB2 capabilities and potential to determine DB2 problems (not simply your capacity to memorize what's in the certification sight at guides). My sentiment is that they achieve this a bit improved than rivals' assessments. exist organized to dwell nonchalant whereas facing some difficult questions. sojourn secure in the competencies you're going to only necessity a low percent of questions answered accurately to flow.

positive historical past guidance on certification is freely obtainable at

What if you analyze?

Books that certainly target certification are your choicest bet. Their insurance suits what you?ll countenance on the assessments. other DB2 books can too exist profitable in pursuing your goal as smartly, however concentrate your pains on those designed to uphold you certify.

Whichever certification guidebook you opt for, you enhance your probabilities of passing with the aid of supplementing them with complementary study components. here are some information.

IBM offers two free courses that you install and exist trained from for your pc. each are GUI-based and interactive. the first is oriented to the DB2 developer cert (tests seven-hundred and 703), the 2nd in opposition t the Linux/Unix/windows DBA tests (assessments seven-hundred and 701). download both from IBM at DB2 Developer domain has free DB2 tutorials, technical articles, and sections where that you would exist able to" the="" your="" ask="" for="" bookmark="" a="" website="" accurate="" and="" db2.="" alternative="" gaining information of="" as="" browser="" in="" meet="" even="" this="" href="http://www7b.application.ibm.com/dmdd/trainingcertification.html">

you're going to want palms-on sustain with DB2 to trip the checks. procure it at work, or deploy DB2 UDB V8 for your domestic computing device running home windows or Linux. which you could at once IBM assist and downloads tab at the excellent of the webpage). most of the certification books for the core assessments consist of a CD-ROM with a affliction replica of DB2 UDB V8 for home windows PCs. The affliction types shipped within the books gain a special affliction length of one hundred eighty days. The affliction version it really is downloaded is 90-days. you could every bit of the time reinstall the application if your certification pains takes longer.

if you necessity any of the DB2 manuals, every bit of Come with the product and are accessible for those who deploy the database from the CD-ROM. otherwise you can

book examine

practice exams

fingers-on DB2 journey.

The sources above give you everything you should cover these bases.

a artery to procure licensed for (nearly) free

A Computerworld article (table 4. suggested FREE DB2 materials

For checks
supplies
mostFree trying out at conferences:
Pool your supplies
I've common a few IT execs who efficiently certified through creating a sight at neighborhood, or teaming up with a examine pal. you will gain considered through now that certifying requires some up-front work in gathering supplies and making judgments about what and how to study. The total procedure can too exist an Awful lot less complicated (and greater enjoyable) when achieved with pals.

in case you assume this method, build sure you gain every bit of received suitable goals. It doesn't exist counted lots if one person in a examine neighborhood drops out before completion, however a shared time table is crucial. every bit of contributors necessity to settle to taking the assessments in the equal order in concerning the identical timeframe for the community to exist triumphant.

do not gain local friends with the equal certification interests? are trying a digital neighborhood at some of the web websites below.

What next?
even if DB2 certification is "value it" is a enormously very own choice. My pals, expert peers, and that i gain benefited, but research the concern to your own pride before committing to the hassle. assume a sight at certification tendencies and group at major certification sites like
References

concerning the writer
Howard Fosdick is an IBM-licensed DB2 DBA and an Oracle-licensed DBA. he's a founder and former president of IDUG and the Midwest Database clients neighborhood. He works hands-on as an unbiased DBA contractor and might exist reached at:

The entire Migrate Now! kit is in line with the concept that it is not just a database license sale for migrations. The complete process is addressed for you from presales aid, publish sales, financing, and training. they now gain developed migration implement kits, free on-line training, deployed direct revenue teams and resources to aid you in planning and enforcing your migration in response to confirmed IBM methodology and years of journey.

The Migrate Now! bundle contains a 25% condense on DB2 UDB licenses when migrating from any Oracle, Sybase, or Microsoft SQL server product unique in this announcement.

These functions can exist in particular tailor-made to meet your fiscal needs - minute or huge. The Migrate Now! Bundle is more than a 25% slice price on the database license. it is a complete conclusion-to-end application designed to ease the transition to DB2.

Migration portalThe Migrate Now! portal will aspect you to more counsel, together with entry to free migration schooling, equipment, and materials to uphold you procure begun. dispute with: www.ibm.com/application/statistics/db2/migration/

live up thus far on industry information and traits, product announcements and the latest improvements.

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This chapter introduces you to the backup and recovery tools that are available with DB2 universal database, and to testify you how to both backup a database on a regular basis and restore a database if it becomes damaged or corrupted.

This chapter is from the reserve 

Fourteen percent (14%) of the DB2 UDB V8.1 for Linux, UNIX, and Windows Database Administration certification exam (Exam 701) and seventeen percent (17%) of the DB2 UDB V8.1 for Linux, UNIX, and Windows Database Administration certification upgrade exam (Exam 706) exam is designed to evaluate your information of transactions and transaction logging, and to test your skill to backup and restore a database using the various methods of backup and recovery available. The questions that build up this portion of the exam are intended to evaluate the following:

Your information of the various transaction logging features available.

Your information of the types of database recovery available (crash, version, and roll-forward) and your skill to demonstrate when and how each are used.

Your skill to return a damaged or debase database to the state it was in at any given point in time.

Your information of how and when invalid indexes are recreated.

Your skill to suspend and resume database I/O and your skill to initialize a split mirror copy of a database.

This chapter is designed to interpose you to the backup and recovery tools that are available with DB2 Universal Database, and to testify you how to both backup a database on a regular basis and restore a database if it becomes damaged or corrupted.

Note

Although basic syntax is presented for most of the DB2 UDB commands covered in this chapter, the actual syntax supported may exist much more complex. To view the complete syntax for a specific command or to obtain more information about a particular command, advert to the IBM DB2 Universal Database, Version 8 Command Reference product documentation.

Terms you will learn:

Transaction

Unit of work

COMMIT

ROLLBACK

Transaction logging

Log buffer

Circular logging

Archival logging

Infinite logging

Log mirroring

Crash recovery

Version recovery

Roll-forward recovery

Transaction failure

Recoverable database

Non-recoverable database

Online backup and recovery

Offline backup and recovery

RESTART

Soft checkpoint

BACKUP

RESTORE

ROLLFORWARD

Recovery History file

LIST HISTORY

PRUNE HISTORY

Redirected restore

SET TABLESPACE CONTAINERS

Invalid index

Split Mirror

Mirroring

Splitting

SET WRITE

db2inidb

Techniques you will master:

Recognizing the types of transaction logging available and understanding when each is to exist used.

Understanding how crash recovery, version recovery, and roll-forward recovery operations are initiated.

Understanding how database-level and tablespace-level backup images are made.

Understanding how full, incremental, and delta backup images are created and used.

Understanding how invalid indexes are recreated.

Understanding how split mirroring is used to backup a database.

Understanding how I/O is suspended and resumed so mirrors can exist split, as well as knowing how split mirrors are initialized.

A transaction (also known as a unit of work) is a sequence of one or more SQL operations grouped together as a sole unit, usually within an application process. Such a unit is called "atomic" because, like atoms (before fission and fusion were discovered), it is indivisible—either every bit of of its work is carried out or not anything of its work is carried out. A given transaction can achieve any number of SQL operations—from a sole operation to many hundreds or even thousands, depending on what is considered a "single step" within your industry logic. (It is well-known to note that the longer a transaction is, the more database concurrency decreases and the more resource locks are acquired; this is usually considered the symptom of a poorly written application.)

The initiation and termination of a sole transaction defines points of data consistency within a database; either the effects of every bit of operations performed within a transaction are applied to the database and made permanent (committed), or the effects of every bit of operations performed are backed out (rolled back) and the database is returned to the state it was in before the transaction was initiated.

In most cases, transactions are initiated the first time an executable SQL statement is executed after a connection to a database has been made or immediately after a pre-existing transaction has been terminated. Once initiated, transactions can exist implicitly terminated, using a feature known as "automatic commit" (in which case, each executable SQL statement is treated as a sole transaction, and any changes made by that statement are applied to the database if the statement executes successfully or discarded if the statement fails) or they can exist explicitly terminated by executing the commit or the ROLLBACK SQL statement. The basic syntax for these two statements is:

COMMIT <WORK>

and

ROLLBACK <WORK>

When the commit statement is used to terminate a transaction, every bit of changes made to the database since the transaction began are made permanent. On the other hand, when the ROLLBACK statement is used, every bit of changes made are backed out and the database is returned to the state it was in just before the transaction began. figure 7-1 shows the effects of a transaction that was terminated with a commit statement; figure 7-2 shows the effects of a transaction that was terminated with a ROLLBACK statement.

Figure 7-1. Terminating a transaction with the commit SQL statement.

Figure 7-2. Terminating a transaction with the ROLLBACK SQL statement.

It is well-known to bethink that commit and rollback operations only gain an consequence on changes that gain been made within the transaction they terminate. So in order to evaluate the effects of a sequence of transactions, you must exist able to identify where each transaction begins, as well as when and how each transaction is terminated. figure 7-3 shows how the effects of a sequence of transactions can exist evaluated.

Figure 7-3. Evaluating the effects of a sequence of transactions.

Changes made by a transaction that gain not been committed are usually inaccessible to other users and applications (unless another user or application is using the Uncommitted Read isolation level), and can exist backed out with a rollback operation. However, once changes made by a transaction gain been committed, they become accessible to every bit of other users and/or applications and can only exist removed by executing current SQL statements (within a current transaction). So what happens if a problem occurs (for example, a power failure occurs or an application abends) before a transaction's changes can exist committed? In order to reply that question, they must first sight at how data changes are made and at how transaction activity is logged.

The biggest trend in IT careers is certification. You survey it everywhere you look... certification books dominate the bookstores, classroom training now guarantees a "pass," and IT professionals even symptom their emails with a list of their "certs."

Certification has arrived, no question. But as a DB2® professional, should you certify? Will it extend your abilities or uphold your career? How can you execute it quickly and inexpensively? That terminal thought is key -- knowing the inside fable on DB2 certification before you proceed will redeem you a ton of time, stress and money. This article tells you what you necessity to know to settle if DB2 certification is for you, and if so, the secrets to doing it successfully, quickly and inexpensively.

Is certification "worth it"?

First, understand that an entire industry profits from certification. Trainers sell certification-oriented courseware, consultants push training, publishers market books, and vendors sell every bit of the above. The upshot is that you can't assume most articles on certification at countenance value. Let's assume a different tack. We'll try to sight at the issue objectively, strictly from the IT professional's standpoint.

Why certify? Some execute it for the challenge of demonstrating their knowledge, or for the inner satisfaction that comes from mastery of the material. Whether a "certified DB2 developer" is better than one that is not certified is, to affirm the least, highly debatable. What they can affirm for sure is that if you certify you'll finish up knowing more about DB2 than you did when you started.

Many certify for career benefits. If you view it this way, you necessity to:

Certify with a product that has major marketshare (and is on the upswing)

Investigate the marketability of the specific cert in which you're interested

On the first point, DB2 is the privilege choice. Most analysts coincide that IBM has taken the lead in the database market away from Oracle (2).

Since database marketshare varies by platform, which platform you work on should factor into your decision. DB2 completely dominates on mainframes and the IBM e-server® iSeriesTM (AS/400), with over 90% of the database marketshare for each. IBM comes in a sturdy second in UNIX® database marketshare, and a far-off but growing third on Windows® Server. Data for Linux is sketchy, but DB2 appears dominant among the commercial databases (

A DB2 programmer wanted to shift into database administration. Getting her DBA cert bagged her the transfer.

A DB2 developer was remarkable with JavaTM but felt too narrow because he didn't know about other approaches to DB2 application development. Getting the "developer" cert gave him the breadth he needed.

A stay-at-home mom wanted to reenter the workforce after a 10-year absence. She got certified and successfully leveraged this as "proof of currency" for her skills.

A current college grad desperately wanted to exist a DBA but only received programming job offers. He proved his devotion to his goal by certifying as a DB2 DBA, which led to an entry-level DBA position.

A develope database veteran realized he needed to update his skills. Certifying both did this for him and supplied the proof. Age discrimination? His certification is as current as anyone else's.

As a contractor, I've directly benefited from certification. It gives me instant credibility with potential employers who've never met me and serves as my trump card for contractor interviews. It deals me an Ace in today?s extremely competitive job market.

Employers desperately want some yardstick measurement to quickly divorce qualified from unqualified candidates. honest or not, they've adopted IT certifications as that yardstick. There is cramped question that DB2 certification can uphold your career, but ultimately each person must settle for him or herself whether it's worth the time and effort.

How to certify

You certify by passing one or more exams. The Roadmap to DB2 Version 8 certification in figure 2 shows that you certify as a DB2 Database Associate by passing the required entry test, "DB2 Family Fundamentals, 700." Then assume any of the five additional certification exams, depending on your locality of interest. For example, to become a certified DB2 Database Administrator, pass "DB2 DBA for Linux, UNIX and Windows, 701," or certify as a mainframe DBA by passing "DB2 DBA for z/OS, 702." (Note- exam #702 will exist available in 1st quarter 2004). You could too become a Certified Application Developer by passing "DB2 Family Applications Development, 703." Or certify in industry Intelligence by taking "DB2 industry Intelligence, 705," or specialize in the Content Manager via exam #442.

A really nice feature of the DB2 certification program is its modularity. After passing the ?DB2 Family FundamentalsÂ _ entry test #700, assume whichever exam(s) you like. Each one you pass gives you another certification.

IBM introduced several current features in the Version 8 certification program. First, there is a tripartite path yielding three ascending levels of DBA certification. This transparent path replaces the grab-bag of advanced ?Certified Solution ExpertÂ _ (CSE) exams in Version 7:

The Version 8 program too introduces a sole test by which Version 7-certified DBAs can upgrade their certification. This is called ?DB2 for Linux, Unix and Windows Version 8 Upgrade Exam, 706.Â _ If you are a Version 7 certified DBA, you can either assume this current upgrade test, or simply pass the yardstick database administration exam #701 to upgrade your DBA cert to Version 8. The Upgrade test features fewer questions and is a shorter test, but many more study resources are available to uphold you pass the yardstick DBA test, #701. In Version 8, IBM introduced a current test called the ?DB2 Problem Determination Mastery ExamÂ _. The exam covers problem determination using DB2 tools, for installation, configuration, communications and the like. Technically, it is not a certification exam, so it has no formal pre-requisites, nor execute you achieve an official certification by passing it. This test will exist of remarkable interest to those who certify as a DBA and want to strengthen (and prove) their problem identification and resolution abilities. The test costs only $40 and can exist taken online via the web. For full information on this exam, and a free, downloadable set of nine study tutorials, visit the exam web page at Table 2. Exam information

Before starting the certification process, read the IBM " and="" current="" terms="" href="http://www-1.ibm.com/certify/index.shtml" explanation=""> for their program to ensure you understand and feel cozy with it before committing.

What are the tests like?

Different candidates gain different experiences. Nevertheless, there exists some conventional wisdom on the subject. Compared to other database vendors' exams, the questions on the DB2 tests are difficult. But as Table 2 shows, the percentage of questions you necessity to reply correctly to pass is quite low. sustain at IDUG conferences indicates a pass rate of about 75% for DB2 exams. bethink that every bit of questions are multiple choice, so reply every one (there is no penalty for wrong answers, so at least guess at every question). The exam software allows you to ticket questions to return to later, so you can skip difficult questions and return to them.

The time allowed for the exams is generous. You'll only consume the allotted time if you check your work carefully. When you're done with the exam, click the Done button and the software instantly shows you whether you passed. You can print copies of your score on the spot via the LAN-attached printer. If you pass, IBM sends you a certificate via mail for printing and framing. You may too request one by mail.

What if you execute not finish the test in the allotted time? The screen freezes, a message tells you the exam has ended, and you'll survey the identical pass or fail message you would if you had clicked the Done button yourself. Oops!

You must study for the exams. Being a DB2 guru won't uphold if you don't study! The tests are broader than most IT pros' information base and too very specific in what they ask. They are designed to exist rigorous.

Compared to competing database vendors' exams, the IBM DB2 tests appear to gain fewer overly specific trivial pursuit questions and more questions requiring profound thought. The exams are intended to test your DB2 information and skill to figure out DB2 problems (not just your skill to memorize what's in the certification study guides). My sentiment is that they achieve this a cramped better than competitors' tests. exist prepared to sojourn nonchalant while facing some tough questions. Remain secure in the information you'll only necessity a low percentage of questions answered correctly to pass.

Useful background information on certification is freely available at

What should you study?

Books that specifically target certification are your best bet. Their coverage matches what you?ll countenance on the exams. Other DB2 books can exist useful in pursuing your goal as well, but concentrate your pains on those designed to uphold you certify.

Whichever certification guidebook you choose, you extend your chances of passing by supplementing them with complementary study resources. Here are some suggestions.

IBM offers two free courses that you install and learn from on your PC. Both are GUI-based and interactive. The first is oriented to the DB2 developer cert (exams 700 and 703), the second towards the Linux/Unix/Windows DBA tests (exams 700 and 701). Download both from IBM at DB2 Developer Domain has free DB2 tutorials, technical articles, and sections where you can" the="" your="" ask="" for="" bookmark="" a="" site="" top="" and="" db2.="" choice="" learning="" as="" browser="" in="" meet="" even="" this="" href="http://www7b.software.ibm.com/dmdd/trainingcertification.html">

You'll necessity hands-on sustain with DB2 to pass the exams. procure it at work, or install DB2 UDB V8 on your home PC running Windows or Linux. You can directly IBM uphold and downloads tab at the top of the webpage). Many of the certification books for the core tests embrace a CD-ROM with a affliction copy of DB2 UDB V8 for Windows PCs. The affliction versions shipped in the books gain a special affliction term of 180 days. The affliction version that is downloaded is 90-days. You can always reinstall the program if your certification pains takes longer.

If you necessity any of the DB2 manuals, every bit of Come with the product and are accessible when you install the database from the CD-ROM. Or you can

Book study

Practice tests

Hands-on DB2 experience.

The sources above give you everything you necessity to cover these bases.

How to procure certified for (almost) free

A Computerworld article (Table 4. Recommended FREE DB2 resources

For Exams
Resources
Most
Free testing at conferences:
Pool your resources
I've known several IT pros who successfully certified by creating a study group, or teaming up with a study buddy. You've seen by now that certifying requires some up-front work in gathering resources and making judgments about what and how to study. The total process can exist a lot easier (and more fun) when done with friends.

If you assume this approach, exist sure you've every bit of got compatible goals. It doesn't matter much if one person in a study group drops out before completion, but a shared schedule is critical. every bit of members must commit to taking the exams in the identical order in about the identical timeframe for the group to succeed.

Don't gain local friends with the identical certification interests? Try a virtual community at one of the web sites below.

What next?
Whether DB2 certification is "worth it" is a highly personal decision. My friends, professional peers, and I gain benefited, but research the issue for your own satisfaction before committing to the effort. Check out certification trends and community at major certification websites like
References

About the author
Howard Fosdick is an IBM-certified DB2 DBA and an Oracle-certified DBA. He's a founder and former president of IDUG and the Midwest Database Users Group. He works hands-on as an independent DBA contractor and can exist reached at:

dbaDIRECT announced its current data infrastructure management service for IBM mainframe DB2 z/OS operating environments. dbaDIRECT is pioneering Data IM in North America and is constantly upgrading its service, the company told Enterprise Systems. It combines automated processes, methodologies, and systems that uphold a round-the-clock eye on an organization’s mission-critical databases.

dbaDIRECT provides what it calls data infrastructure as a managed service (Data IM for short). work is done remotely, out of company headquarters in Cincinnati with follow-the-sun service uphold offices in India. “dbaDIRECT gains leverage by making the management of database environments an intelligent process-oriented approach, incorporating technology designed to build the data infrastructure function as efficiently as feasible to the profit of its clients,” according to a company representative.

“There are several layers to the service, but the key constituent is dbaDIRECT’s proprietary ‘platform’ for handling remote database administration; it’s called ONguard 2.0™,” the spokesperson continued. ONguard 2.0 is an intelligent framework that supports data infrastructure management service model, using a seamless workflow process. The service includes monitoring, troubleshooting and complete performance optimization uphold for every bit of major database platforms (Oracle, UDB DB2, Sybase, SQL Server, MySQL and now DB2 zOS) using the ONguard IM process.

The company says that database operations gain changed from strategic handicap to yardstick industry practice, and database administration is now a “commodity” job that can easily exist outsourced. By transferring responsibility for the “data babysitting” tasks, DBAs can exist used more strategically and assume handicap of advances in industry intelligence and predictive analytics that can rotate data into “actionable” information.

According to the company’s CEO, John Bostick, the company was driven to tender the service by a “continuing renaissance for Big-Iron computing” along with “a shrinking labor pool of IT professionals with mainframe skills.”

As Bostick notes, “The mainframe is far from dead. There are three reasons: One, the cost of mainframe computing is too attractive; two, IBM recently has invested $100 million in z-platform improvements; and, three, the open-source Linux operating system can race on mainframes, along with five other operating systems.”

The company says independent research into the mainframe market backs up Bostick. For example, a survey terminal year of 135 mainframe customers across several verticals conducted by William Data Systems establish commitment to mainframes is sturdy and soundless growing: 49 percent of Big-Iron customers expected to extend mainframe processes during 2007. Staffing soundless concerns are soundless important: 44 percent of respondents said that existing or anticipated worker shortages would retard the deployment of current mainframe-related projects or services.

Bostick says that enterprises can utilize managed service providers, such as his firm, “with scaleable, intelligent processes, provide the solution to this labor-shortage glitch.”

Other trends are exacerbating the talent shortage. Bostick points to the “explosion of data volumes,” claim for round-the-clock mission-critical support, and regulatory compliance.

“We are responding to these trends with scaleable automation, advanced process design and service smooth expertise that gives better year-over-year flexibility to manner for the era of explosive data growth,” Bostick said.

“Bottom line is mainframe computing is fast, cheap, stable and growing but increasingly expensive to administer and maintain,” Bostick concluded. “Our Data IM model enables customers to capture the falling computation hard-costs and fix the rising administrative soft-costs at the identical time.”